California opens draft statewide plastics monitoring strategy for public review; comments due March 11

Tony Hale of the San Francisco Estuary Institute and Kyla Kelly, water quality program manager at the Ocean Protection Council, presented a draft statewide plastics monitoring strategy and planning framework intended to guide coordinated macro- and microplastics monitoring across California.

Kyla Kelly framed the effort: "We can establish a baseline of understanding of plastic contamination in the state's aquatic environments," she said, and added that continued monitoring would let agencies track trends and evaluate the effectiveness of policies.

Tony Hale described a phased approach that starts with pilot studies in the first three years and scales monitoring as methods and partners mature; the strategy separates macroplastics (>5 millimeters) from microplastics (<=5 millimeters) because the sampling methods, analytical needs and management questions differ. He said the report recommends a plastics material coefficient pilot to estimate the fraction of unmanaged trash that is plastic, and emphasized FAIR data principles — findable, accessible, interoperable and reusable — to make different datasets comparable.

Public review and funding: presenters said the report is posted for public review and linked on the trash-monitoring page; they noted comments are due by March 11. Kyla said OPC released the draft on its listserv and the team welcomes amplification via the monitoring council’s email list. When asked about funding, Kyla said bill language for SB 54 suggests some mitigation funds could be used for monitoring and that the strategy is being designed with potential funding streams in mind, though specific budgets are "still to be determined."

Why it matters: A coordinated statewide monitoring program could provide consistent baselines, identify sources such as textile or cellulose-acetate fibers, inform mitigation priorities and help evaluate the efficacy of legislative and regulatory actions to reduce plastic pollution.

Next steps: Tony said the strategy includes a list of potential program partners and recommends using pilot-phase lessons to refine methods and expand monitoring. He said the project team will post links to the public-review page and the feedback form and invited stakeholders to submit comments and to contact plastics@svi.org for more information.